#o0{
    /*background-color: cadetblue;*/
    /*padding: 3% 1% 3% 1%;     !*上 右 下 左*!*/
    margin:3% 1% 2% 1%;
    width: 98%;
    height: calc(100vh - 10vh);
}
#o1 {
    /*background-color: blue;*/
    margin: auto;
    width: 100%;
    height: 13%;
}
#o2 {
    /*background-color: red;*/
    float: left;
    /*position: absolute;*/
    margin: 2% 0 2% 3%;
    width: 45%;
    height: 65%;
}

#o3 {
    /*background-color: aquamarine;*/
    float: left;
    /*position: absolute;*/
    margin: 2% 0 2% 3%;
    width: 45%;
    height: 65%;
}
#o4 {
    /*background-color: rosybrown;*/
    margin: auto;
    /*position: absolute;*/
    float: left;
    width: 100%;
    height: 15%;
}
